JPH0573640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an outboard lifting and retrieving device, and more particularly to an outboard lifting and retrieving device suitable for lifting and retrieving a submersible or the like from the side of the ship.

Conventionally, equipment for performing overboard lifting and retrieval work on submersible support vessels, etc. has had cantilevers extended outboard from a gate-shaped crane frame installed on the support vessel, and a crane club that runs over these cantilevers. The club is hoisted up and retrieved via a hanging rope using hoisting means provided on the club.

However, with conventional lifting and recovery equipment, the submersible is suspended using a sling, which allows for relative movement between the support vessel and the submersible, which causes various problems. . In other words, under bad sea conditions, the support ship itself may roll or
There is a problem in that it tilts due to pitching and collides with the relative movement of the submersible and the support vessel, which is likely to cause damage. Therefore, retrieval work by submersibles can only be carried out under favorable sea conditions, which is a significant limitation. In addition, accidents can be prevented by making the length of the cantilever overhanging the side of the ship sufficiently long and moving the lifting and retrieval position away from the ship's hull, but if the crane club moves onto the cantilever, a large moment will be generated on the support ship. The disadvantage is that the hull tilts, and the tilting is exacerbated by lifting the submersible. Crane clubs and submersibles have a large influence on the ship's heel due to their large weight, and even if the support ship was equipped with ballast adjustment or other devices to correct the ship's heel, it was not a sufficient countermeasure. . Moreover, the cantilever is required to have sufficient strength to bear the heavy loads of the crane club and the submersible, which also has the disadvantage of increasing the size of the lifting and retrieving device and increasing the inclination of the hull.
These problems are not limited to the lifting and retrieving equipment of submersibles;
The same thing happened when other heavy objects were recovered.

The present invention focuses on the above-mentioned conventional problems, and aims to stably hold a lifting object such as a submersible to prevent relative movement from occurring between it and the ship's hull, and to minimize the ship's inclination as much as possible. The purpose of the present invention is to provide an outboard hoisting and recovery device that can be adjusted.

The gist of the present invention for achieving the above object is to include a movable crane that is installed above the side of a ship and projects outwardly of the ship, and a movable crane that is installed on the side of the ship and above the side of the ship toward the crane. It has an extended guide rail and a pedestal that can be raised and lowered along the guide rail, and the pedestal is provided with a pulling winch means for drawing a lifting object such as a submersible to the pedestal. A lifting means for lifting the lifting object, which is provided with a fender to prevent interference with the lifting object, and lifting the lifting object and lowering the lifting object to the crane; The outboard lifting and retrieval device is provided with a pedestal lifting means for pulling up the pedestal integrally with the pedestal, and a pedestal removal means for removing the pedestal from the hoisting and storage body.

With the above configuration, first, the winch means pulls the lifting object to the cradle, and the lifting object pulling means and the cradle pulling means pull up the cradle together with the lifting object, and then the guide rail moves the cradle to the cradle. The moving direction of the ship is regulated to prevent relative movement between the lifting body and the ship, and since the lifting work is carried out along the belly surface of the ship, the amount of moment that would cause the ship to tilt is extremely small. After the lifting object is suspended from the movable crane by this pulling up, the pedestal is removed from the lifting object by the pedestal removing means. All that is left to do is to use the movable crane to pull in the hoisting and retrieving body suspended toward the ship in the direction of extension of the movable crane, and lower it onto the deck of the ship to complete the retrieval.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the outboard lifting and recovery apparatus according to the present invention will be described in detail below with reference to the drawings.

1 to 3 are a side view, a front view, and a plan view of the outboard recovery device according to this embodiment.

As shown in the figure, the outboard lifting and recovery device according to the present embodiment has a pair of left and right guide means 12 arranged on the outer side of the ship 10. This guide means 12 comprises two guide rails 14 each oriented in the vertical direction. Each guide rail 14 consists of a fixed guide rail 16 fixed to the hull surface, a lower guide rail 18 and an upper guide rail 20 that extend above the deck so as to be connected to the fixed guide rail 16. The fixed guide rail 16 has a length extending from the hull deck surface to below the waterway, and is connected to the lower guide rail 18 at the upper end. The lower guide rail 18 is laid on the outer surface of the base plate 22 which is pivotally attached to the deck surface, and can be raised and lowered onto the deck, so that both guide rails 16,
18 is set in a straight line. In order to raise and lower the lower guide rail 18, the board 22
A lifting cylinder 24 is attached to the back side of the holder, and a stopper arm 26 for maintaining the upright position is attached to the rear side of the holder.
is provided. On the other hand, an upper guide rail 20 that can be connected to the upper end of the lower guide rail 18 raised on the deck is provided, but the guide rail 20 is laid on a base plate 28 like the lower guide rail 18. ing. This upper board 2
8 is pivotally attached to the lower surface of a crane frame 30 of a movable crane that is installed on a ship 10 and extends out from the side, and a lift cylinder 32 attached to the frame 30 is connected to the back side of the crane frame 30. This allows the upper guide rail 20 to be accommodated along the lower surface of the frame 30.
For this reason, the guide rail 14 can extend up to a height from the ship's belly surface to the crane frame 30. Upper and lower guide rails 18, 20
is connected between the upper and lower substrates 22 and 28 by a connecting pin 33 and held in a straight line.

Of the two guide rails 14 in each guide means 12, the lower guide rail 18 is provided independently on a pair of lower substrates 22, and the upper guide rail 20 is provided in parallel on one upper substrate 28. . Moreover, although the upper guide rail 20 can be retracted into the ship's side, it is set so that it can be connected to the lower guide rail 18 at a projecting portion of the crane frame 30.

Each guide means 12 including such a guide rail 14 is provided with a pedestal 34 that is movable up and down along the guide rail 14. This pedestal 34 is formed into a rectangular flat plate shape, and is connected to the guide rail 14 at a portion facing the guide rail 14 so as to be movable. This concrete structure is shown in FIG. The guide rails 14 have an L-shaped cross section, and the pair of guide rails 14 face each other. A bracket 36 is protruded from the pedestal 34, and a guide wheel 38 is rotatably attached to the bracket 36, and the guide wheel 38 is inserted into the guide rail 14 and is in contact with the guide rail 14 so as not to come off. Therefore, the pedestal 34 is restricted from moving in the longitudinal direction of the ship 10 and outward to the side, and is allowed to move up and down only in the up and down direction. Further, in order to move the pedestal 34 up and down, a lifting cable 40 is connected to the upper end side of the pedestal 34, and the lifting cable 40 is connected to the crane frame 30.
It is connected to a winding means (not shown) via a guide sheave 42 provided in the. Furthermore, a pair of upper and lower fenders 44 made of a flexible material such as a rubber material are attached to the outer surface of the lift pedestal 34, and the fendering effect is made possible by filling the inside with air. Further, the lifting platform 34 is provided with a pulling winch 48 for pulling a submersible vessel 46 as a lifting object. This pulling winch 48 is installed at the upper end of the pedestal 34, and the pulling line 50 that is to be let out is passed through a lower sheave 52 and an intermediate sheave 54, and its tip is passed between the upper and lower fenders 44. It is possible to withdraw. The towing line 50 is connected to the side wall of the submersible vessel 46, and when the towing winch 48 is activated, the submersible vessel 46 and the elevating platform 34 are integrally connected with the fender 44 interposed therebetween. It is.

On the other hand, the submersible 46 to be lifted and recovered is attached to a lifting cable 58 that is let out from a hoisting means (not shown) via a guide sheave 56 provided on the overhanging end side of the crane frame 30 described above at a position corresponding to each guide means 12. It is lifted up. A lifting fitting 60 is provided at the tip of the lifting cable 58, and is connected to the upper surface of the submersible vessel 46 for hoisting operation. Further, a steady rest device 62 is attached to the upper surface of the submersible 46 . The anti-swaying device 62 is a member formed with an arcuate portion that follows the upper surface of the submersible 46, and is capable of holding the submersible 46 fixedly when it is pulled up to the crane frame 30 by passing the hanging fitting 60 inside. . In addition,
A stopper cylinder 64 is installed on the upper wall of the submersible 46.
There are two locations. That is, the stopper cylinder 64 includes a rod (not shown), a hydraulic cylinder, etc., and the rod is configured to expand and contract using hydraulic pressure from a solenoid valve. Further, a hole (not shown) is formed in the anti-sway device 62, and as the rod of the stopper cylinder 64 expands, the rod is inserted into this hole, and the rod (not shown) of the stopper cylinder 64 and the anti-sway device 62 are inserted into the hole. To temporarily fix the submersible vessel 46 to the anti-swaying device 62 so that the submersible vessel 46 does not fall from the suspended state due to malfunction of the lifting cable 58 or stretching of the lifting cable 58 due to engagement with a hole that is not attached. I can do it.

Lifting and recovering the submersible vessel 46 using the outboard lifting and recovering device configured as described above is carried out as follows. First, lower the lifting pedestal 34 so that the guide rail 14
Position it at the bottom of. The tip of the towing line 50 is pulled out from the pedestal 34 and connected to the side wall of the floating submersible 46. This work is performed by letting out the tow line 50 using a work boat and by having a diver make a connection with the submersible vessel 46. Next, when the winch 48 on the pedestal 34 is activated,
The submersible vessel 46 is pulled in and becomes integrally connected to the pedestal 34, as shown by the imaginary line in FIG. At this time, since the towing line 50 is let out from the pair of left and right supports 34 at an intermediate position between the upper and lower fenders 44, the submersible 46 can be reliably pulled toward the fender 44 even in sea wave conditions. Therefore, there is no risk of collision with the pedestal 34 or the ship 10.

In this way, with the fender 44 interposed, the pedestal 3
The submersible 46, which is integrally connected with 4, includes:
A lifting cable 58 for carrying out lifting work is connected. The lifting cable 5 is connected via a guide sheave 56 of the crane frame 30 extending outside the side
8 and the diver connects to the upper surface of the submersible 46. After this work, the submersible 46 is hoisted. At this time, the lifting cable 40 connected to the pedestal 34 is hoisted up at the same time as the lifting cable 58, and the submersible 46 and the pedestal 34 are hoisted together. . During this operation, the submersible 46 is held on the pedestal 34 by the tow rope 50, and the cradle 34 is only allowed to move vertically by the guide rail 14, so the submersible 46 The relative movement with the object is restricted and the object is moved upward. At this time, since the guide rail 14 is extended above the deck by the upper and lower guide rails 20 and 18, the submersible vessel 46 is reliably held even in the air. In this way, the submersible 46 that has been lifted to the upper end is connected to the crane frame 30 by the anti-sway device 62, and the hole (not shown) of the anti-sway device 62 is engaged with the rod (not shown) of the stopper cylinder 64. In some cases, the submersible vessel 46 is temporarily fixed to prevent it from descending from the suspended state due to malfunction of the lifting cable 58 or stretching of the lifting cable 58. At this time, the pedestal 34 is in engagement with the upper guide rail 20, as shown by the solid line in FIG.

Next, in order to move the submersible 46 to the inside side, the connecting pin 3 between the upper and lower guide rails 20 and 18 is
3 and the stopper arm 26, and the tow line 50 and the submersible 46 are uncoupled. Then, the lower guide rail 18 is brought down to the deck surface by the actuation of the lifting cylinder 24, and the upper guide rail 20 is pulled into the crane frame 30 side by the actuation of the lifting cylinder 32. By the retracting operation of the upper guide rail 20, the pedestal 3 is engaged with the upper guide rail 20.
4 also performs a similar operation, moving away from the submersible 46 and being accommodated in the lower surface of the crane frame 30. Thereafter, the submersible 46 is moved inboard along the crane frame 30 by a crane while being lifted up to the lifting fitting via the guide sheave 56 of the crane frame 30, and is stopped at a predetermined position. After such a stop, the lifting cable 58 is rewound and placed and fixed on the deck of the ship 10 to complete the lifting and retrieval work.

As described above, according to this embodiment, since the submersible 46 is lifted and recovered by the pedestal 34 that moves up and down along the side, there is no relative movement between the submersible 46 and the ship 10, which improves work safety. will improve. In addition, since the work is carried out along the side of the ship, the amount of moment that causes the ship to list is small, making it possible to reduce the amount of rolling during lifting and retrieval. Furthermore, the towing line 50 of the submersible 46 is let out from between the upper and lower fenders 44, and the submersible 46 to the fender 44 is pulled out from between the upper and lower fenders 44.
The abutment is ensured. Further, the guide rail 14 is configured to be added in the air and can be stored, so that the holding operation in the air can be carried out safely and there will be no hindrance to the lifting and retrieving operation.

In the above embodiment, the fender 44 is pneumatic, but it may be of any type as long as it has a buffering effect.
The structure and number are not limited to the examples. Further, the cross-sectional shape of the guide rail 14 does not need to be L-shaped, and may be any shape as long as it can hold the pedestal 34 so as to be movable up and down. Furthermore, the lifting object is not limited to the submersible vessel 46. Alternatively, the crane frame 30 may be extendable and retractable in and out of the ship's side.

As described above, according to the outboard hoisting and retrieval device according to the present invention, relative movement between the hoisting and retrieving body and the ship's body can be prevented and the inclination of the ship can be reduced, thereby improving work safety and downsizing the device. It has an excellent effect of being able to achieve the desired results.

[Brief explanation of the drawing]

Fig. 1 is a side view of the overboard lifting and recovery device according to this embodiment, Fig. 2 is a front view of the same, Fig. 3 is a plan view of the same, and Fig. 4
The figure is a plan view showing the relationship between the guide rail and the pedestal. 10... Vessel, 12... Guide means, 14...
Guide rail, 30...Crane frame, 34
... Lifting pedestal, 40... Lifting cable, 44... Fender, 46... Submersible, 48... Pulling winch,
50... Towing cable, 58... Lifting cable, 62...
anti-sway device.

Claims (1)

[Claims] 1. A movable crane installed above the side of a ship and protruding outward from the ship; a guide rail extending toward the crane on and above the side of the ship; The pedestal has a pedestal that can be raised and lowered along the pedestal, and the pedestal is provided with a pulling winch means for drawing a lifting object such as a submersible to the cradle, and a defense mechanism is provided to prevent interference with the lifting object. Lifting body lifting means provided with a gauntlet and lifting the hoisting body and lowering it to the crane; and a pedestal lifting means that integrally pulls up the pedestal with the hoisting body as the hoisting body moves up and down. and a cradle removing means for removing the pedestal from the hoisting body.